1
Balance the scale: 9 + 9 17 + ? =
2
Balance the scale: 7 + 5 4 + ? =
3
Balance the scale: 5 + 4 1 + ? =
4
If left side 5 × 5, what does the right side equal to balance the scale? =
5
Balance the scale: 1 + 1 1 + ? =
6
Balance the scale: 8 + __ 10 =
7
Balance the scale: 1 + 4 1 + ? =
8
Balance the scale: 3 + 10 10 + ? =
9
If left side 9 × 9, what does the right side equal to balance the scale? =
10
If left side 10 × 4, what does the right side equal to balance the scale? =
11
Balance the scale: 1 + 5 3 + ? =
12
Balance the scale: 1 + 8 3 + ? =
13
Balance the scale: 2 + 2 2 + ? =
14
Balance the scale: 3 + 6 3 + ? =
15
Balance the scale: 1 + __ 4 =
16
Balance the scale: 4 + __ 8 =
17
Balance the scale: 6 + __ 7 =
18
Balance the scale: 3 + __ 4 =
19
Balance the scale: 9 + 10 18 + ? =
20
Balance the scale: 1 + __ 3 =